Growth of Microorganisms in Chilled Orange Juice

摘要: Growth of lactic acid bacteria and yeasts in chilled orange juice was investigated. Three suspensions were prepared, each consisting four strains Lactobacillus, Leucomostoc, yeast. Each composite suspension inoculated into a series bottles containing sterile prechilled to obtain final concentration 1,100, 1,000 organisms/ml. Samples stored at 35, 40, 45, 50 F (1.7, 4.5, 7.2, 10 C), plated periodically throughout the test period. Yeasts grew all temperatures investigated, their rates growth increasing with temperature. Lactobacillus organisms but not 45 or below, Leuconostoc did grow 35 F, slowly 40 rapidly F. Fermentation by yeasts, depending on level inoculation, occurred 1 week less 2 weeks At it 3 satisfactory for lowest inoculation. Spoilage from grow...